Wind-shaped rock (ventifact)? At a target dubbed Augustine, the Pancam takes a close look at one of the cobble-size rocks on Murray Ridge using its filter collection. (More about the filters here.) This image at right uses left-side filter #5 (green), which produces a grayscale view similar in tone to what the eye would see.
Opportunity raw images, its latest mission status and location map. (Note: due to a computer issue at JPL, the raw-images page link given here does not always show the latest-received sol’s images. Use the first link in the text at top.)